Patents by Inventor Takuto KIMURA
Takuto KIMURA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11805074Abstract: A control apparatus includes an acquisition unit that acquires application information related to at least one of a plurality of sessions at a plurality of timings for each of the plurality of sessions related to a plurality of types of applications that are communicating in a network, a search unit that searches for an allocation band of each of the plurality of sessions at the plurality of timings based on a QoE prediction value of each of the plurality of sessions derived from the application information and a condition for a band of the network, and a control unit that controls allocation of a band for each of the plurality of sessions at the plurality of timings based on the allocation band searched by the search unit.Type: GrantFiled: August 27, 2020Date of Patent: October 31, 2023Assignee: Nippon Telegraph and Telephone CorporationInventors: Hideaki Kinsho, Takuto Kimura, Taichi Kawano, Kazuhisa Yamagishi
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Publication number: 20230103218Abstract: A control apparatus includes an acquisition unit that acquires application information related to at least one of a plurality of sessions at a plurality of timings for each of the plurality of sessions related to a plurality of types of applications that are communicating in a network, a search unit that searches for an allocation band of each of the plurality of sessions at the plurality of timings based on a QoE prediction value of each of the plurality of sessions derived from the application information and a condition for a band of the network, and a control unit that controls allocation of a band for each of the plurality of sessions at the plurality of timings based on the allocation band searched by the search unit.Type: ApplicationFiled: August 27, 2020Publication date: March 30, 2023Inventors: Hideaki KINSHO, Takuto KIMURA, Taichi KAWANO, Kazuhisa YAMAGISHI
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Patent number: 11470145Abstract: A server selection devices includes: an acquisition unit for acquiring, regarding each of a plurality of servers having the same content, a list of quality information corresponding to communication environment information regarding a source of request for download of the content; and a selection unit for selecting one of the plurality of servers based on the list of the quality information regarding each of the plurality of servers and a cost associated with download of the content. Thus, a destination of a content download request can be selected while giving consideration to not only quality but also cost.Type: GrantFiled: December 5, 2019Date of Patent: October 11, 2022Assignee: Nippon Telegraph and Telephone CorporationInventors: Takuto Kimura, Arifumi Matsumoto, Hideaki Kinsho
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Publication number: 20220286386Abstract: A routing control device of the present invention includes: a storage unit that stores, for each IP address block, a next hop, information on a route to the IP address block, and quality information regarding the route; a quality requirement determination unit that receives communication data bound for a communication destination host and determines a quality requirement of the communication data; and a next hop selection unit that references the storage unit and selects a next hop for the communication data based on quality information regarding a route to an IP address block to which an IP address of the communication destination host belongs and the quality requirement.Type: ApplicationFiled: July 30, 2020Publication date: September 8, 2022Inventors: Arifumi Matsumoto, Takuto Kimura, Aomi Jokoji
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Publication number: 20220224990Abstract: A moving image control apparatus is a control device that realizes bitrate control in a moving image streaming service, which includes a calculation means for calculating a quality target value used for the bitrate control such that a utility function including a predetermined engagement index value is optimized through Bayesian optimization.Type: ApplicationFiled: May 8, 2020Publication date: July 14, 2022Inventors: Takuto KIMURA, Arifumi MATSUMOTO, Tatsuaki KIMURA
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Publication number: 20220060538Abstract: A server selection devices includes: an acquisition unit for acquiring, regarding each of a plurality of servers having the same content, a list of quality information corresponding to communication environment information regarding a source of request for download of the content; and a selection unit for selecting one of the plurality of servers based on the list of the quality information regarding each of the plurality of servers and a cost associated with download of the content. Thus, a destination of a content download request can be selected while giving consideration to not only quality but also cost.Type: ApplicationFiled: December 5, 2019Publication date: February 24, 2022Inventors: Takuto Kimura, Arifumi Matsumoto, Hideaki Kinsho
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Patent number: 11165858Abstract: A server selection device includes: an acquisition unit that acquires communication environment information indicating communication environment and quality information indicating communication quality for each of communications made regarding each of a plurality of servers that are candidates for distribution of content to a client; a calculator that calculates a score reflecting probabilistic deterioration in communication quality for each of combinations between a server and communication environment information based on a history of the communication environment information and the quality information acquired by the acquisition unit; and a selector that selects a server to deliver content to the client based on the score calculated by the calculator, thereby enabling the selection of a server less likely to affect the quality of experience.Type: GrantFiled: February 4, 2019Date of Patent: November 2, 2021Assignee: Nippon Telegraph and Telephone CorporationInventors: Takuto Kimura, Arifumi Matsumoto
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Publication number: 20210037088Abstract: A server selection device includes: an acquisition unit that acquires communication environment information indicating communication environment and quality information indicating communication quality for each of communications made regarding each of a plurality of servers that are candidates for distribution of content to a client; a calculator that calculates a score reflecting probabilistic deterioration in communication quality for each of combinations between a server and communication environment information based on a history of the communication environment information and the quality information acquired by the acquisition unit; and a selector that selects a server to deliver content to the client based on the score calculated by the calculator, thereby enabling the selection of a server less likely to affect the quality of experience.Type: ApplicationFiled: February 4, 2019Publication date: February 4, 2021Inventors: Takuto Kimura, Arifumi Matsumoto
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Patent number: 10491903Abstract: A delivery rate selection device, for selecting a delivery rate when delivering a video image from a video delivery server to a client in a video delivery service. When a delivery rate calculating unit receives from an inquiry source an inquiry of delivery rate for delivering a video image to a given user, a delivery rate calculating unit acquires presence or absence of a playback stall tolerance and presence or absence of an image quality deterioration tolerance of the given user from the user characteristic storage unit, selects an encoding rate from a plurality of encoding rates of the video image according to a combination of the presence or absence of a playback stall tolerance and the presence or absence of an image quality deterioration tolerance of the given user, and returns the selected encoding rate as the delivery rate to the inquiry source.Type: GrantFiled: June 9, 2016Date of Patent: November 26, 2019Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuto Kimura, Masahiro Yokota, Ken Nishimatsu, Hiroshi Yamamoto, Kei Takeshita, Kazumichi Sato, Taichi Kawano
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Patent number: 10462520Abstract: A pacing control device to perform pacing control on a content distributed from a content distribution device that performs streaming-based content distribution, includes an obtainer configured to obtain a communication quality threshold that corresponds to a communication environment in the pacing control device; and a controller configured not to make a request for the content to the content distribution device in a case where a communication quality in the pacing control device is lower than the communication quality threshold, and to make the request for the content to the content distribution device in a case where the communication quality is higher than the communication quality threshold.Type: GrantFiled: February 9, 2017Date of Patent: October 29, 2019Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuto Kimura, Arifumi Matsumoto, Masahiro Yokota
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Publication number: 20190052931Abstract: A pacing control device to perform pacing control on a content distributed from a content distribution device that performs streaming-based content distribution, includes an obtainer configured to obtain a communication quality threshold that corresponds to a communication environment in the pacing control device; and a controller configured not to make a request for the content to the content distribution device in a case where a communication quality in the pacing control device is lower than the communication quality threshold, and to make the request for the content to the content distribution device in a case where the communication quality is higher than the communication quality threshold.Type: ApplicationFiled: February 9, 2017Publication date: February 14, 2019Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuto KIMURA, Arifumi MATSUMOTO, Masahiro YOKOTA
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Publication number: 20180376176Abstract: A quality-of-experience optimization apparatus including: a quality related information database that stores quality information indicating network quality together with time information indicating a time when the network quality was measured, and position information indicating a position where the network quality was measured; an estimator that obtains, from the quality related information database, quality information that satisfies a predetermined condition corresponding to a playback position that is a position where playback of the video is performed and to a playback time that is a time when the playback is performed, and estimates network quality at the playback position and the playback time based on the quality information; and a calculator that calculates a recommended value of a coding condition of the video such that quality of experience of the video is optimized based on the network quality estimated by the estimator and coding conditions that are usable for the video.Type: ApplicationFiled: December 1, 2016Publication date: December 27, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Arifumi MATSUMOTO, Masahiro YOKOTA, Takuto KIMURA
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Publication number: 20180213234Abstract: A delivery rate selection device, for selecting a delivery rate when delivering a video image from a video delivery server to a client in a video delivery service. When a delivery rate calculating unit receives from an inquiry source an inquiry of delivery rate for delivering a video image to a given user, a delivery rate calculating unit acquires presence or absence of a playback stall tolerance and presence or absence of an image quality deterioration tolerance of the given user from the user characteristic storage unit, selects an encoding rate from a plurality of encoding rates of the video image according to a combination of the presence or absence of a playback stall tolerance and the presence or absence of an image quality deterioration tolerance of the given user, and returns the selected encoding rate as the delivery rate to the inquiry source.Type: ApplicationFiled: June 9, 2016Publication date: July 26, 2018Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATIONInventors: Takuto KIMURA, Masahiro YOKOTA, Ken NISHIMATSU, Hiroshi YAMAMOTO, Kei TAKESHITA, Kazumichi SATO, Taichi KAWANO